Boiler



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J. E. SGHLIEPER. BOILEB..

No. 556,698. Patented Mar. 17,1896-lv 'I p I n Y ,.ZZWe/fan' gi/2&2'

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UNITED STATES .IOIIN E. SCI'ILIEPER, OF IITTSBURG,

PENNSYLVANIA, ASSIGNOR TO THE STIRLING COMPANY, OF CHICAGO, ILLINOIS.

BOILER.

SPECIFICATION forming part of Letters Patent No. 556,698, dated March17, 1896.

Application filed April l, 1895. Renewed December 10, 1895. Serial No.571,717. (No model.)

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Be it known that I, JOHN E. SCHLIEPER, a citizen of the United States,residing at Pittsburg, Pennsylvania, have invented a new and usefulImprovement in Boilers, of which the following is a specification.

In the accompanying drawings, Figure lis a if'crtical sectional idew ofan ordinary Stirling boiler provided with my improved means ofintroducing feed-Water; and Fig. 2 the same, showin g a modified form ofboiler.

A is the mud-drum, which may be made either singly or of communicatingmembers; I3 and B', elevated steam and water drums, and B2 an elevatedwater-drum, which in some cases may also be a steam and water drum; O,O', and C2, banks of tubes connecting the mud-drum with the elevateddrums 5 D, a feeddruin; d, an inlet-pipe for introducing water into thefeed-drum, and d pipes leading from the feed-drum to one of the elevateddrums, preferably the rear one, for introducing water into the boilerproper or into general circulation.

The llirst an d most important feature of my invention consists inproviding for the introduction of feed-water in the forward part of theboiler, immediately over the furnace, and thence introducing it into thegeneral circulation. To this end I provide a suitable feeddrum, which Iprefer to place in an elevated position in the forward part of theboiler, from which drum suitable pipes lead to the proper part orposition for introducing water into the boiler proper. As shown, thesepipes lead from the feed-drum to the rear elevated drum, and, althoughchanges may be made in this respect, I prefer to arrange them in thisway. The feed-drum is of course provided with a suit-able supply-pipefor introducing feedwater.

Although not always necessary, I prefer to use a feed-water heater forraising the temperature of the water before introducing it into theboiler; but, whether this be done or not, my arrangement of thefeed-drum in an elevated position in the forward part of the boiler withthe pipes leading therefrom enables thc water to be more or less heatedbefore it finally enters into the general circulation. This heating ofcourse causes the precipitation of sediment or scale matter, which maybe removed from either the feed-drum or lower mud-drum by blowing od orotherwise.

Another4 part of my invention is shown in u the modified form of boilerillustrated in Fig. 2. In this modification there are three banks oftubes, and the mud-drum is formed of separate drums or compartmentsconnected by an enlarged pipe. It will be understood, however, that thisi'orm of mud-drum is not necessary, except in the particularconstruction shown in said figure, and even in such construction thedifferent drums or compartments may be connected by a comparativelysmall pipe or by several small pipes or nipples instead of by the largepipe shown. Whatever be the generalfcrm of the boiler, suitablebaffle-tiling should be arranged in such positions as to properlydeflect and distribute the lluegases 5 butin this form, especially, Iprefer to have suitable baffle-tiling extend down from the rear upperdrum in the middle of the rear bank of tubes, to facilitate localcirculation therein. In this construction I also prefer to have-threebanks of tubes; but the middle bank may be omitted and the relative sizeof the banks or number of tubes in each bank changed, as desired.

The elevated steam and Water drums, the lower mud-drum, and the pipesand banks of tubes connecting the several drums perform their usualfunctions in this type of boiler, and therefore need no special ordetailed description. It will be understood, however, that the elevateddrums are not in all cases required to have both steam and watercoinmunication, and hence that pipes connecting their water-spaces maybe used or omitted, as desired.

As will be seen, the elevated feed-drum in the forward part of theboiler is applicable to an ordinary Stirling boiler, as Well as tomodied forms thereof; but, inasmuch as such feed-drum may be used inother forms of boilers, it will be understood that I do not intend tolimit myself to its use in the form shown or in any other particularconstruction, it being my intention to use it in any and all forms andpositions to which it may be found applicable. The same remark willapply to the modified form of boiler consti- IOO tuting the otherfeature of my invention, and generally it will be understood that,except as pointed out in the claims, I do not intend to limit myself tospecial fea-tures or details of construction.

I claim- 1. In a water-tube boiler, the combination of a feed-drum inelevated position adjacent to the furnace, means for introducing` waterinto the feed-drum, and a pipe or pipes extending from the feeddrum to adrum in the rear part of the boiler whereby water may be introduced intogeneral circulation, substantially as described.

2. In a water-tube boiler, the combination of elevated steam and waterdrums communicating with each other, a lower mud-drum formed ofcommunicating drums or members, a bank of tubes connecting the rea-relevated drum with the rear member of the muddrum, a bank of tubesconnecting the front elevated drum with the front member of themud-drum, and means for introducing feed- Water, substantially asdescribed.

3. In a Water-tube boiler, the combination of elevated steam and waterdrums communicating with each other, a lower mud-drum formed ofcommunicating drums or members, a bank of tubes connecting the rearelevated drum with the rear member of the muddrum, a bank'of tubesconnecting the front elevated drum with the front member of themud-drum, an elevated feed-drum in the forward part of the boiler, meansfor introducing water into the feed-drum, and pipes com municatingbetween the feed-drum and the rear upper drum whereby Water may beintroduced into the rear upper drum and into general circulation,substantiallT as described.

4. In a Water-tube boiler, the combination of elevated steam and Waterdrums communicating with each other, a lower mud-drum formed ofcommunicating` drums or members. a bank of tubes connecting the rearelevated drum with the rear member of the muddrum, a bank of tubesconnecting the front elevated drum with the front member of themud-drum, a middle bank of tubes connecting the communicating pipesbetween the elevated drums and the rear and forward members of themud-drinn, respectively, an elevated feed-drum in the forward part ofthe boiler, means for introducing water into the feed drum, and pipescommunicating` between the feeddrum and the rear upper drum, wherebywater may be introduced into the rear upper drum and into generalcirculation, substantially as described.

, JOHN E. SCIILIEPER.

W itn esses WM. M. TUBER, Jr., G. L. Ronenns.

